程春祖,徐纪刚,骆强,孙玉山,徐鸣风
CHENG Chun-zu,XU Ji-gang,LUO Qiang,SUN Yu-shan,XU Ming-feng(State Key Laboratory of Biobased Fiber Manufacturing Technology

• 1:中国纺织科学研究院生物源纤维制造技术国家重点实验室

摘要(Abstract)：

研究了纤维素在N-甲基吗啉-N-氧化物(NMMO)/水体系中的溶胀、溶解过程对纤维素溶液性能的影响,为纤维素在NMMO/水体系中纺丝成形提供理论依据。利用X-射线衍射(XRD)探索了纤维素溶胀后的结晶结构变化,利用旋转流变仪探讨了纤维素浓度、聚合度等对纤维素溶液流变性能的影响。结果表明:经溶胀后的纤维素,非晶区被部分破坏,使其结晶度下降,从而更易被均匀、快速地溶解;纤维素的聚合度越大,含量越高,其大分子链的解缠及伸展越困难,分子间作用越大,纤维素溶液的流动性越差,越不利于纤维素的纺丝成形。
The effect of process of swelling and dissolution of cellulose in NMMO/H2O system on the properties of cellulose solution were studied,and the theoretical basis for fiber-forming of cellulose in NMMO/H2O system were guided.The crystallinity after cellulose swelling were explored by XRD,the results show that the amorphous regions of cellulose were destroyed partly and crystallinity decreased so that cellulose could be dissolved uniformly and rapidly after swelling.The influence of content and degree of polymerization of cellulose on reological properties of cellulose sollution were investigated by rotary rheometer.The results showed that the disentanglement and stretching of cellulose molecular chains were more difficult and intermolecular interaction were greater with increasing of content and degree of polymerization of cellulose,it led to the unfavorable affect on fluidity of cellulose sollution and fiber-forming of cellulose.

关键词(KeyWords)： 纤维素溶胀;结晶性;溶解;流变性;纺丝成形;N-甲基吗啉-N-氧化物
cellulose swelling,crystallinity,dissolution,reological property,fiber-forming,NMMO

Abstract:

Keywords:

基金项目(Foundation): 国家重点基础研究发展计划资助项目(2010CB35805、2012CB724610);; “十二五”科技支撑计划项目(2011BAE11B02)

作者(Author): 程春祖,徐纪刚,骆强,孙玉山,徐鸣风
CHENG Chun-zu,XU Ji-gang,LUO Qiang,SUN Yu-shan,XU Ming-feng(State Key Laboratory of Biobased Fiber Manufacturing Technology

DOI: 10.16090/j.cnki.hcxw.2012.07.008

参考文献(References)：

• [1]王海云,朱永年,储富祥,等.溶解纤维素的溶剂体系研究进展[J].生物质化学工程,2006,40(3):54-58.
• [2]刘瑞刚,胡学超,章潭莉,等.新一代纤维素纤维Lyocell[J].合成纤维,1997,26(4):23-28.
• [3]吴翠玲,李新平,秦胜利,等.新型有机纤维素溶剂-NMMO的研究[J].兰州理工大学学报,2005,31(2):73-76.
• [4]FJ517—1982关于铜氨溶液配制及纤维素聚合度测定[S].1982.
• [5]衣志刚,李茂松,周文龙,等.Lyocell纤维溶胀性能的研究[J].浙江工程学院学报,2002,19(1):1-5.
• [6]Kalt W,Anner J M,Firgo H.Moulding materials and spinningmaterials containing cellulose:US,5556452[P].1996-09-17.
• [7]Thomas R,Antje P,Immanuel A,et al.Cellulose solutions in N-methylmorpholine oxide(NMMO)-degradation processes and stabilizers[J].Cellulose,2002(9):283-291.
• [8]张松洁,邵惠丽,胡学超.纤维素/NMMO/水溶液流变性能的研究[J].合成纤维,2003,32(6):13-17.
• [9]顾广新,胡赛珠,邵惠丽,等.纤维素溶液的动态流变性质[J].东华大学学报(自然科学版),2001,27(4):12-16.
• [10]吴翠玲,李新平,秦胜利,等.纤维素/NMMO.H2O溶液体系流变性能的研究[J].纤维素科学与技术,2005,13(1):34-38.